Jacket for coverings for steam or other pipes



June 30, 1931. TAFT JACKET FOR GOVERINGS FOR STEAM OR OTHER PIPES Filed Feb. 2, 1931 yA A A AVAVAVA A A INVENTOR,

AVAVAVAVAVAVAVA 15M 11 2m, warm.

A TTORNE Y.

Patented June 30, 1931 UNITED STATES PATENT OFFICE PATRICK M. TAFT, OF HOLYOKE, MASSACHUSETTS Application filed February 2, 1931.

This invention relates to improvements in jackets for coverings for steam or other pipes. An object of my invention is to provide a finished, painted jacket for pipe coverings which is more economical of manufacture and installationthan any of the devices used for 1siimilar purposes now in use and on the maret.

A further object of my invention is to eliminate the necessity for employing metal clamping bands or straps in use at present to cover unsightly butt joints in pipe coverings, and for retaining the coverings of insulation in place.

Other objects and advantages of my invention will appear in the specifications with reference to the drawings, and appended claims.

At the present time, much diificulty is experienced in finishing the various types of pipe coverings so that they will present a neat, finished and workmanlike appearance. With either air cell, or magnesia pipe coverings, if finished with a canvas jacket, metal bands are usually employed to cover the butt joints, the lateral oints must be hidden from view, if possible, and, due to the porosity of the covering, several coats of sizing and paint must be applied in order to present a finished appearance. An alternative to this method is to use a sewed canvas jacket over the covering. This method eliminates the use of metal bands and possibly one'coat of sizing, but is in itself a laborious and costly 5 operation. Furthermore, the stitching, which cannot always be concealed, presents an unsightly appearance. All these unsatisfactory conditions are eliminated, and at a decided reduction in expense, by the use of my invention.

Broadly, my invention comprises a sheet of thin cloth or fabric to which is secured by any suitable adhesive material a sheet of glazed colored paper, thus forming a strong pliable jacket material which incorporates the finished color as an integral part thereof. As this material is manufactured complete at the factory, and delivered in rolls of any de- 80 sired size, it will be readily understood that Serial No. 512,773.

no painting of the covering is required after installation.

A preferred form of my invention is illustrated in the accompanying drawings, in which:

Fig. 1 is a perspective view showin a pipe covered with air cell covering and ished with my improved jacket material.

Fig. 2 is an elevational view of a piece of the acket material with a corner of the glazed, colored paper rolled back to show the cloth foundation. K

' Fig. 3 is a detail sectional view of the material.

Fig. 4 is a view similar to Fig. 2, showing a modified form using as a foundation asbestos paper instead of cloth.

Fig. 5 is a detail sectional view ofthe material illustrated in Fig. 4.

Fig. 6 is an elevational view of a section of 70 covered piping showing a band of my jacket material covering a butt, and

Fig. 7 is a further modification of jacket material covering.

Referring to the drawings in detail, in 7 which like numerals refer to like parts throughout:

A pipe 1 is covered with the air cell covering 2, three layers being shown. The jacket 3 is wrapped around the outer layer of the covering 2 and with the edges lapped over as shown at 4, preferably on the upper side of the pipe 1. The overlapping edge 6 is secured to; the edge 5 by any suitable adhesive material. The end 7 of the next section of 85 jacket 3' terminates with the adjacent end 80f the jacket 3, which is flush with the end of the covering 2. In other words, the ends 7 and 8 form a butt joint.

The jackets 3 and 3 are permanently pasted or secured in any way to the pipe coverings 2, each of which corresponds with the lengths of the-coverings and forms a butt'joint when assembled on the pipe 1. These joints are then preferably covered with the band 15 shown in Fig. 6, as will be described.

The jackets 3 and 3' are composed of a layer of cloth 10 and a layer of glazed, colored paper 11, secured together with any suit able heat resisting adhesive material, thus 10:

forming a pliable, strong jacket material which may be bent or folded without cracking, when it is applied to the covering. The paper 11 may be integrally colored, or it may be finished with a coat of paint 12 and glazing 13, but the paint does not, as a rule, readily adhere to the paper, so I preferably employ the jacket shown in Fig. 7 where two layers of cloth are employed and the paint applied to the cloth.

A modified form of jacket is shown in Figs. 4 and 5, in whichva layer of asbestos paper 14 serves as a foundation material instead of the cloth 10 and the glazed paper is applied directly to the asbestos paper and then calendered.

For the purposes of illustration only, I have shown my jacket used with air cell covering, but it will be readily understood that any form of covering, including joints, fittings, and flanges, may be easily and quickly jacketed by the use of my device.

' cured together by a suitable ad A further use for my jacket material is illustrated in Fig. 6. The jackets 3 and 3 are applied as described for Fig. 1, the end joints of the coverings and jackets butted. A strip of jacket material 15, approximately three inches wide, is wrapped around the butted end j oints'of the coverings and jackets 3 and 3, as indicated, and secured to one of the jackets 3' by a suitable adhesive material 16.

The part 17 of the jacket strip 15, which overlies the jacket 3, is not secured thereto, thus permitting the strip 15 to move with the j acket 3 and independent of the jacket 3 to form an expansive joint. The longitudinal edges 18 and 19 of the strip 15 are laplped and seesive material 20. It is obvious that the strip 15 may be used,

if desired, to cover butt joints in pipe covering, omitting the pipe covering jacket 3 and I E When the thin glazed paper is placed upon a layer ofasbestos so as to form a jacket, the glazed paper will prevent the subsequent crumbling of the asbestos paper and will also render the same to some extent moistureproof. 7

Referring to Fig. 7 the pipe covering jacket is composed of. a layer of cloth 21, then a layer of paper 22, next a layer of cloth 23 and finally a finished coating of paint 24 of any desired color or gloss. I find that this composite jacket enables the finished coat of paint 24 to firmly adhere to the second layer of cloth 23. I may, if desired, provide a glazed coating to the painted surfaces 12, 13 and 24 of the jacket shown in Figs. 3, 5, and 7.

- What I claim is: a

1. An insulating covering comprising a plurality of abutting sections of insulating material, j ackets' for said sections, said jackets being secured to said sections and an extension upon one of said ackets' overlying but not secured to an end upon an adjacent ]acket to cover closely the abutting ends of said sections and permit expansion and contraction thereof without uncovering said abutting ends.

2. An insulating covering comprising aplurality of abutting sections of insulating material, jackets for said sections, said jackets belng secured to said sections and a band secured to one of the abutting ends of said jackets and closely overlying an end of an adjacent jacket to permit relative movement of the adjacent section and to cover the abutt1ng ends of. said sections and permit expansion and contraction thereof without uncovering said abutting ends.

3 An insulating cover comprising a plu-. ral ty of abutting sections of insulating material, jackets for said sections, said jackets belng secured to said sections, a band of flexi le material comprising a-layer of asbestos and a layer of paper rigidly secured to one only of the abutting ends of said ackets and overlying an end of an adjacent jacket to cover the abutting ends of said sections and permit expansion and contract on thereof without uncovering said abuttingends.

4. An insulating cover comprising a plural ty of abutting sections of insulatlng materlal, jackets for said sections, said jackets belng secured to said sections, and a band of flexible material comprising a layer of cloth and a layer of paper, both of said layers being secured together by an adhesive substance, said band being secured to one of the abutting ends of said jackets and slidably engaged wlth an end of an adjacent jacket to cover the abutting ends of said sections and permit expansion and contraction thereof without uncovering said abutting ends.

5. A finished insulating pipe covering comprislng a first layer of insulating material, a jacket material comprising a layer of asbestos paper and an exterior layer of thin glazed paper said last two mentioned layers being secured together by an adhesive substance and said last two mentioned layers being secured by an adhesive substance to said first layer of insulating material.

PATRICK M. TAFT, 

